Sternloff, R. E., & Warren, R. (1984). Park and recreation maintenance management (2nd ed.). Wiley.
Cita Chicago (17th ed.)Sternloff, Robert E., i Roger Warren. Park and Recreation Maintenance Management. 2nd ed. New York: Wiley, 1984.
Cita MLA (9th ed.)Sternloff, Robert E., i Roger Warren. Park and Recreation Maintenance Management. 2nd ed. Wiley, 1984.
Atenció: Aquestes cites poden no estar 100% correctes.